Island



(No Model.)

D. L. G01-"R MEGHANISM FOR DBLIVERING AND CUTTING ROLL PAPER..

Patented Nov. 15, 1892.

UNITED STATES PATENT DEEICE.

DARIUS L. GOFF, OF PAWTUCKET, RHODE ISLAND.

MECHANISVI FOR DELIVERING AND CUTTING ROLL-PAPER.

SPECIFICATION forming part of Letters Patent N o`. 486,103, datedNovember 15, 1892.

Application filed May 5, 1892. Serial No. 431,908. (No model.)

To all whom it may concern.-

Be it known that I, DARIUS L. GOFF, of Pawtucket, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Mechanism for Delivering and Cutting Roll-Paper;and I do hereby declare that the following specification, taken inconnection with the drawings furnished and forming a part of the same,is a clear, true, and complete description of my invention.

My present invention relates to machines of that type which wasdisclosed in my application for Letters Patent iiled September 25, 1890,Serial No. 366,075. My said application disclosed various organizationsrespectively embodying all or portions of my invention, and among themwas a machine of the particular variety which constitutes the subject ofmy present application, and it is to be understood that the features ofnovelty to be herein specified and claimed are such as could not havebeen appropriately claimed in my said original application.

This machine is adapted to deliver paper from a rotatively-mountedroll-package in predetermined lengths, the measuring operation beingdependent upon delivery-rolls and an automatic stopping mechanism. Thesevering of the free end of the paper involves the use of aproperly-located knife or cutter, against which the paper is pulled ordrawn by the operator after the stop-motion has precluded a furtherdraft of paper. The releasing of the stopping mechanism involvesmanipulation; but the projection from the rolls of a grasping length ofthe free end of the paper is in this machine automatically executed by apeculiar overbalancing of the rolls, the latter making a partialautomatic rotation forwardly promptly on being released from thestopping mechanism, Whereas in certain of my other machines the rollsare thus partially rotated for projecting the free end from the bight ofthe rolls by means of a hand-wheel, and in other machines two sets ofrolls are co-operatively coupled for alternately working with tworoll-packages, the draft of paper from either set of rolls and fromeither package causing the last cnt free end of the -other package to beprojected from the other set of rolls.

After describing my invention as embodied in the machine illustrated inthe drawings the features deemed novel and appropriate to thisapplication will be duly specified in the clauses of claim hereuntoannexed. j

Referring to the drawings, Figure 1 illustrates my said machine in frontelevation. Fig. 2 illustrates the same in end View. Fig. 3 is a centralvertical cross-section of the same. Fig. 4. illustrates theoverbalancing of the delivery-rolls by means of weights, as employed inthe machine, Figs. l, 2, and 3. Fig. 5 illustrates the overbalancing ofthe delivery-rolls by means of flat springs. Fig. 6

illustrates the overbalancing of the rolls by means of a spiral spring.Fig. 7 illustrates a releasing-pawl and th umh-piece, the latteroperating as by a slide or push-button, so distinguished from alever-pawl and thumbpiece, as shown in Figs. l and 2.

The casing A of the machine may be varied in its form and construction,due provision being made for properly mounting a rollpackage of paper Btherein and also for affording bearings for the delivering and measuringrolls C and C', with space for their accompanying mechanism. As hereshown, the casing is composed of a back plate ct, two end plates ct o2,and a curved front plate a3, the chamber in which the roll-package iscarried being closed at the top by a sliding cover a4 and secured by agravity-latch, as specially disclosed by me in a contemporaneousapplication for patent. (See Serial No. 431,907, May 5, 1892.)

The rollpackage B is usually provided with a central hollow core, and itis carried on a shaft freely supported in U-shaped bearings projcctingfrom the inner surfaces of the end plates, one of said bearings beingindicated in dotted lines in Fig. 2 with an adjacent open slot, throughwhich the diminishing size of the roll of paper may be from time to timeobserved. Below the roll-package the delivering and measuring rolls C Care so located that the free end of paper pendent from the package maybe passed between the rolls and outwardly, as indicated at IOO b, andalso in dotted lines in Fig. 3. These rolls are longitudinallycorrugated and mesh together, and they are therefore in substancerotatively coupled or geared together, so as t0 revolve in harmony. Thelower roll C carries a knife or cutter c, whichV in this instance is aserrated blade mounted radially at the periphery of the roll, so as totake the place of one of the corrugations. As shown in Fig. 3, thecutter is in its operative position, the rolls being looked at thatpoint by stopping mechanism, which in this instance consists in part ofa disk d, (on the shaft of the lower roll,) having on its periphery astopcatch d', as clearly indicated in Fig. 2. \Vith this disk astop-pawl engages, it beingiinmaterial in what manner the pawl may beconstructed and applied, so long as it has a finger d2 and willautomatically engage with the catch on the disk and be capable ofpromptly releasing the disk upon being manipulated. As shown in Fig. 2,the linger d2 is carried at the inner end of a simple pivoted lever e,the outer end being provided with a thuinb-piece or handlef. In Fig. 7the finger d2 is carried by an appropriately-shaped freely-sliding bare', which may be provided with a light spring if gravity beinsuiiicient. The outer or lower end of this bar is provided with athumbpiece or push-button f. As shown in Fig. 1, the releasing deviceefis outside of the casing atone end; but it may be located within thecasing, if desired, so long as the thumbpiece is externally accessible.

As thus far described, it will be readily seen that if the projectingfree end of the paper be pulled the rolls will make but one revolutionand then be stopped, with the cutter in proper position for severing thelength of paper so drawn out, if the latter be either straightly pulledor, as is preferable, pulled downwardly and torsionally. After thusdetaching said length the then free end of pamper will be tightly heldin the bight of the rolls, and of course inaccessible for pulling, andin order that a grasping length of paper may be automatically projectedfrom the rolls upon releasing the stopping mechanism the rolls areoverbalanced, or, in other words, so unequally balanced when in that`position that they will freely rotate forwardly to the required degreeupon being permitted so to do. It is immaterial in what manner thisoverbalancing of the rolls is eiiected, and it can be accomplished invarious ways, whether by weights or by springs.

In Figs. 1, 2, 3, and 4: the overbalancing and the resultant automaticrotation of the rolls is due to the presence of segmental Weights g andg', usually duplicated, one pair being at each end of the rolls, itbeing understood, however, thatthey need be only heavy enough to surelysemi-rotate the rolls and draw a short length of paper from theroll-package. Then the rolls are in their locked position, the weight gof the lower roll is at the front upper side thereof and the weight g'at rear upper side of the upper roll, and there-` fore they operate inharmony for properly inducing the required rotative movement of bothrolls, as will be clearly understood upon inspection of Figs. 3 and et.These weights afford somewhat less than one-quarter of a revolution,which is ample for my purposes. It Will be readily seen that the pullingout of paper until the stop-motion operates sets the weights in theiroperative or working positions and that they must promptly operate uponthe manipulation of the thumb-piece.

`In Fig. 5 I illustrate the use of flat springs h and h', respectively,bearing at proper times upon tappet-arms h2 h3, progecting radially fromthe axis of the rolls, (or mounted on the ends of the rolls,) saidsprings being set for service in the same manner as theweights are, andthey perform the overbalancin g function in a satisfactory manner. Bysetting the upper tappet-arm 71.3 a little behind the lower arm h2 (asto time) a very satisfactory range of rotation can be secured.

In Fig. 6 I illustrate the use of spiral springs for the same purpose,the retractile spring t' being coupled to a crank-arm t at the end ofone or both of the roll-shafts, said crankarm being double if thebearing for the shaft is outside of the crank and single if located atthe end of the shaft outside vof a bearing.

Other means for overbalancing the rolls might have been illustrated, butwhat I have disclosed is deemed ample for enabling a full comprehensionof this, the characteristic feature in this class of my machines.

It will be obvious that however a papercutt-er may be arranged in themachine it can be relied upon for service so long as 1t occupies aposition favorable to being engaged by the paper near the rolls afterthe stop motion has been operated, and it 1s equally obvious that themeans for overbalancing, with the stopping mechanism and any form ot'releasing device, do not depend for their value upon any specialarrangement of the cutter. u

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a machine for delivering paper in predeterminedlengths from a rotativelymounted roll-package, the combination,substantially as hereinbefore described, of a pair of overbalanceddelivering and measuring rolls geared together, a cutter carried on oneof said rolls, stopping mechanism for restricting the rotation of saidrolls, and a thumb-piece which when manipulated releases the rolls andpermits them to partially rotate and to automatically project the freeend of the paper for grasping, so that on pulling said free end a lengththereof may be drawn from the package corresponding With the measuringcapacity of the rolls, the cutter presented in position for service, andthe IOO IIO

or springs,'for overbalancing said rolls and ro'.

causing them to partially rotate automatically upon being released fromthe stopping mechanism.-

DARIUS L. GOFF.

Witnesses:

J AMES A. PERRY, M. W. SPENCER.

